30 Thyroid Symptoms That Are Too Important to Ignore

6. Heart Palpitations or Irregular Heartbeat

Ever felt your heart racing for no apparent reason? If you're experiencing heart palpitations---where your heart seems to skip a beat or beats way too fast---it could be a sign that your thyroid is out of balance. When your thyroid is overactive, it speeds up your metabolism, and this can make your heart work harder than it needs to. It might also come with a sense of anxiety or stress, as your body feels like it's in constant overdrive. This increased strain on your heart can eventually lead to more serious issues, including heart disease, so if you're feeling this way, it's important to check in with your doctor.